Tag Archives: Hellas Planitia

HiRISE: Complex terrain on floor of Hellas Planitia

Complex terrain on the floor of Hellas Planitia. Beautiful Mars series.

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HiRISE: To great depths

Hellas is an ancient impact structure and is the deepest and broadest enclosed basin on Mars. It measures about 2,300 kilometers across and the floor of the basin, Hellas Planitia, contains the lowest elevations on Mars. The Hellas region can … Continue reading

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THEMIS: Hellas Planitia in false color

THEMIS Image of the Day, February 13, 2017. Today’s false color image shows plains in the northern part of Hellas Planitia. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to … Continue reading

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THEMIS: Morning light on Reull Vallis

THEMIS Image of the Day, January 27, 2017. Today’s VIS image, made soon after local sunrise, shows a small portion of Reull Vallis. Reull Vallis is one of the major channels entering eastern Hellas Planitia. More THEMIS Images of the … Continue reading

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HiRISE: Contact between two distinct types of bedrock northwest of Hellas Planitia

In this context image is an old degraded crater that has undergone a complex history of burial and erosion. The image shows a surface with at least two types of exposed bedrock, one that is light-toned and one that is … Continue reading

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HiRISE: Channels in crater NE of Hellas Planitia

Channels in crater northeast of Hellas Planitia. Beautiful Mars series.

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HiRISE: 3-km crater & bedrock north of Hellas

3-kilometer crater and bedrock exposures north of Hellas Planitia. Beautiful Mars series.  

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HiRISE: Hellas Planitia floor

Hellas Planitia floor. Beautiful Mars series.

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HiRISE: Nested channels near Hellas

We’re not sure if this channel-inside-a-channel was carved by flowing water or lava. Flowing water erodes channels, and flowing lava both erodes and melts surrounding rock to form channels. It’s not clear whether a huge surge of water or lava … Continue reading

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HiRISE: Crater north of Hellas, with clay minerals?

I keep a silent vigil. A crater to the north of Hellas Planitia with possible phyllosilicates in the ejecta. Beautiful Mars series.

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